GreenFumeHood®3 is Erlab's integrated filtration technology for fume hoods. It consists of Neutrodine®Unisorb molecular filters, HEPA particulate filters (when needed), a sensor suite for continuous monitoring, and the Smart Command interface. The technology converts a traditional fume hood into a filtered, recirculating system that requires no ductwork and no building exhaust.

Neutrodine® Unisorb is Erlab's proprietary filtration formulation that handles solvents, acids, and bases simultaneously with a single filter. Conventional activated carbon requires different carbon types for different chemical families. Neutrodine®Unisorb uses a multi-layer approach that transforms molecules during passage, enabling simultaneous adsorption of chemical classes that would otherwise require separate filtration systems.

Regular activated carbon adsorbs molecules based on physical attraction to the carbon surface. It works well for non-polar organic solvents but struggles with polar molecules, acids, and bases. Most carbon filters require impregnation with heavy metals or blending of different carbon types to handle mixed chemistry. Neutrodine®Unisorb achieves broader chemical compatibility without heavy metal impregnation or carbon blending, using a proprietary multi-layer formulation developed over five years of R&D.

Erlab has validated over 700 chemicals for use with GreenFumeHood®3. The validated list includes common organic solvents (acetone, toluene, hexane, ethanol, methanol), acids at room temperature (hydrochloric, sulfuric, nitric, acetic), bases, inorganic compounds, formaldehyde, and ammonia. Each chemical has documented retention capacity and projected filter life based on usage volumes.

Perchloric acid and hot acid digestions require dedicated wash-down ducted systems. Unknown or highly variable chemistry needs ducted exhaust. Large-scale synthesis with significant heat generation exceeds filtration capacity. Radioactive materials require specialized containment. Any chemistry not validated through the eValiQuest process should not be used with GreenFumeHood®3.

AFNOR NF X 15-211 is the most stringent safety standard for filtered fume hoods. It requires that exhaust concentrations never exceed 1% of the Threshold Limit Value (TLV) for any chemical under normal operating conditions. The standard also requires documented containment efficiency, maintained air face velocity, and a complete chemical listing with retention capacity data. GreenFumeHood®3 meets both Class 1 (with safety filter backup) and Class 2 requirements.

GreenFumeHood3 includes a sensor suite that continuously monitors filtration performance. The VOC sensor (Molecode S) is standard on all units. Acid sensors (Molecode A) and formaldehyde sensors (Molecode F) are added based on your specific chemistry. When sensors detect that filtration efficiency is declining, you receive visual and audible alerts before any safety threshold is reached.

GreenFumeHood3 uses a two-level filtration system (Class 1 per AFNOR NF X 15-211). When the main filter approaches saturation, molecules are directed to the safety filter. You receive alerts to replace the main filter before the safety filter is engaged. At no point are you operating without backup protection.

Three specialized sensors monitor different chemical classes. Molecode S uses semiconductor detection for volatile organic compounds. Molecode A uses electrochemical detection for acid vapors. Molecode F uses electrochemical detection for formaldehyde. Four additional sensors monitor operating conditions: anemometer for face velocity, tachometer for fan operation, and sensors for temperature and humidity inside the enclosure.

Yes. The Smart Command interface connects via WiFi. The eGuard app provides real-time access to filtration status, alarm history, temperature and humidity trends, and face velocity data from any connected device.

Filter life depends on chemical usage patterns. Typical filter life is 18-48 months. Heavy usage of challenging chemicals shortens filter life. Light usage of well-retained chemicals extends it. The eValiQuest assessment provides a projected filter lifecycle based on your specific chemistry and usage volumes.

Filter costs vary based on hood size and filter type. Your Erlab representative can provide specific pricing during the eValiQuest assessment..

Filters are designed for straightforward replacement. The Revolving® system means you replace one filter module at a time rather than all filters at once. Erlab provides documentation and training during eValiPass installation. Most filter changes take under 30 minutes.

No. Spent Erlab filters are made from environmentally friendly raw materials (coconut-derived activated carbon) and can be disposed through energy recovery. They do not require hazardous waste handling or manifesting.

Energy savings depend on your climate, energy rates, and hood size. Published studies document ducted hood operating costs at $3.70 to $7.40 per CFM per year, or $4,400 to $9,300 annually for a typical 6-foot hood. GreenFumeHood®3 consumes 80-440 watts depending on size, with annual energy costs under $100 per hood. The primary ongoing cost is filter replacement rather than energy.

GreenFumeHood®3 eliminates the capital cost of ductwork, roof penetrations, make-up air systems, and HVAC upsizing. For new construction, this reduces mechanical systems sizing by 25% or more. For renovations, it eliminates the construction cost and timeline associated with building modifications.

Many utility companies offer rebates for energy efficiency improvements. The University of Rochester case study included a $36,000 NYSERDA rebate for their GreenFumeHood®3 installation. Contact your utility account representative to ask about HVAC load reduction incentives.

No. GreenFumeHood®3 filters contaminated air and returns clean air to the laboratory. No building exhaust, no roof penetrations, no make-up air systems required.

Yes. Filtered fume hoods with GreenFumeHood®3 technology are portable. They can be relocated to different benches, different rooms, or different buildings as laboratory needs change.

Most installations complete in a few hours. There's no coordination with building systems, no HVAC rebalancing, and no construction timeline. ValiPass certified installation includes setup, testing, validation, and training in a single visit.

GreenFumeHood®3 is an integrated filtration technology designed for fume hood enclosures. Implementation depends on the specific hood design. Contact Erlab to discuss your existing equipment.

Many institutions require case-by-case approval for filtered fume hoods. GreenFumeHood®3 provides the documentation EH&S teams need: AFNOR NF X 15-211 certification, ASHRAE 110 containment testing, validated chemical lists, monitoring protocols, and continuous alarm data. The eValiQuest process generates a complete submission packet for EH&S review.

GreenFumeHood®3 complies with AFNOR NF X 15-211:2009 (Class 1 and Class 2), passes containment testing per EN 14175-3 and ASHRAE 110:2016, and operates within ANSI/ASSP Z9.5 laboratory ventilation program requirements.

Every GreenFumeHood®3 installation includes a ValiPass Certificate of Validation listing approved chemicals, filter configuration, detection system requirements, and projected filter lifecycle. Ongoing documentation includes alarm histories, filter change records, and periodic assessment reports through the ValiGuard program.